Queensland Police have launched an investigation after a man died in custody in Maryborough on Saturday.
Emergency services were called to Alice Street in Maryborough in south-east Queensland about 11.50am to check on the care.
Police said they responded to reports of a man in his 30s acting erratically before he was restrained.
The man was sedated and taken to hospital by ambulance.
Police said he suffered a medical emergency and died a short time later.
The incident will be investigated by the Queensland Police Ethical Standards Command.
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